SOLUTION: A man traveled from A to B at 40 miles per hour and then from B to A at 60 miles per hour. What was his average speed (in miles per hour) during the entire journey? HINT: it is
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Question 220650: A man traveled from A to B at 40 miles per hour and then from B to A at 60 miles per hour. What was his average speed (in miles per hour) during the entire journey? HINT: it is not 50 mph ! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! A man traveled from A to B at 40 miles per hour and then from B to A at 60 miles per hour. What was his average speed (in miles per hour) during the entire journey? HINT: it is not 50 mph !
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d = rt --> t = d/r (one way)
t1 = d/40
t2 = d/60
Assign a distance of 120 miles one way (it will work for any distance)
tt = 120/40 + 120/60 (total time)
tt = 5 hours
240 miles/5 hrs = 48 mph
